Hi Technical,
I checked the IP of your report and it took me back to your country. I assume it's your own IP in the time of posting.
Avast updater in any situation tries to get the hostname of the computer, even when not requesting 'real' internet connection. Just for reporting purposes.
So, as it tried to get your own hostname, it contacted internet for a while and ZA spotted that.
Next time, you may check that it's really your own IP by checking winipcfg (w9x) or ipconfig (w2k,wxp) programs.
I'll try to change that behaviour.
thanks for your time.